Engine or machine packing.



PATENTED NOV. 13, 1906.

G. W. BELDAM. ENGINE 0B. MAGHINBPAGKING.

APPLIOATION FILED DEU. 7, 1905.

Df 74, y 5m UNTTEE sTATEs- PATENT cEEicE.

GEORGE WILLIAM BELDAM, OF EALING, ENGLAND.

ENGlNE OR MACHINE PACKING.

Application filed December 7,1905. Serial No. 290,832.

To n/ZZ whom t may concern:

Beit known that I, GEORGE WILLIAM BEL- DAM, a subject of the King of England, residing at Ealing, England, have invented a new and useful Improved Engiiie or Machine Packing, of which the following is a specification.

This invention has reference to packings used in engines or machines for making a tight joint between a moving part, such as a rod or plunger, and a stationary part, such as a cylinder cover or end, or other part of the engine, pump, or machine in connection with which the rod or plunger works and from which it is desired to prevent the escape of iiuid or into which the entrance of fluid is to be prevented; and the primary object and effect of the present invention is to provide in or in connection with packings comprising asbestos, canvas, or other soft or pliable fabric a solid white metal or analogous metal which is capable of being readily bent, so as to be easily formed or adjusted to suit different sizes of piston and other rods or parts to which it is to be applied.

Asbestos, canvas, or other suitable fabric (or such material in combination with strips of plaited or plain thin metal or the like) which is to form the base or body of the packing and in connection with which the solid white or like metal bar or strip or a plurality of bars or strips is or are to be combined is folded into continuous folds, between which folds are inserted a bar or bars or strip oi` strips of white or other suitable metal or mixture, and according to this invention the section of the metal strips or bars is such that it will embed itself between the folds in such a manner that it will key itselfin thematerial, and, further, the metal of the section or sections referred to is Aslotted or cutv in a diagonal oroblique direction to allow the metal to bend or conform to the piston-rod or surface against which it comes in contact more easily. The diagonal slots or cuts or grooves extend diagonally or obliquely to the irection of the axis of the rod to be packed` that is, at an oblique angle to the direction of length ofthe metal-and they are of any suitable shape and possess a distinct advantage, in that when they meet and come in contact with the piston or gle across ing: of the rod, which when the slots are. vertical,

is liable or likely inimis reduced to a in the county of Middlesex,

Specication of Letters Patent.

Patented Nov. i3, i906.

mum. The diagonal slots or cuts in the metal: bars extend from the face which will come next the rod and which will be flush with the working face ofthe packing generally to a part near the base or back side of the bar or strip.

The invention is illustrated inl the accompanying drawings, and its further description will be made by their aid. f

In the drawings, Figures l and 2 are perspective views showing my invention in cross-section, in whichthe soft portion or body of the packing is in different forms. Figs. 3 and 4 are two perspective views of the metal bar or strip according to this invention, showing it side and when standing on its lower edge or face, respectively.

eferring now to the drawings, a generally designates the metal bar, and e is the outer or main body of the packing.

In Fig. 1 the main body of the packing is designated e, and consists of parallel laminae of textile material, as asbestos, canvas, or any other suitable fabric or a combination of such fabric and metal sheets, such as plaited metallic sheets or plain thin sheets or wire gauze.

InFig. 2 the body e may be taken to be made of the same character of materials, but with the plaits or folds of laminae of the materials lying in a plane at right'angles to the lplane of the bar a, the other being parallel with the bar a. As shown, vthis bar e is inclosed by and lies iii the space'within the laminae of the body `material e, its working edge beingI flush with that of the body e, and the part of the bai' e which lies within the working face ofuthe packing is of greater depth or thickness at one part than another,

so that the part of the material of the body e which lies pn or=next the thinner and positively holds the bar in position, and it cannot shift or come away from the body.

The backing of the body e of the packing may be 'made of canvas, asbestos, or textile or any suitable material, or such material in lcombination with thin metallic sheet metal, or of any suitable materials.

In the section or form of bar Ishown in the drawings there is a bulb or enlarged part b at the the narrowest part toward the working edge or face somewhatin the form or section of a keyhole. Various modifications, however, of

part keysV IOO back edge, and it extends in size from IXO this section may be employed by which the keying effect or method is accomplished.

The oblique slots or cuts Ac extend from the outer edge or working face of the bar to the narrow part just within the head t, and they allow the side of the metal which cornes in contact with the piston-rod to close as the back portion or side away from the rod bends, and they have a slight tendency to slide on one another. The bending of the rod as statedcauses the slots to close or meet, and they are advantageous, especially with packings arranged in spiral form-that is, not in cut ringsowing to the fact that the longer the rod of metal the upward slidf ing tendency of the slots or cuts is increased, In the shorter lengths, such as that suitable for ring form, this increase is not so marked. The folds of canvas, asbestos, or the like, or canvas, asbestos, inl conjunction with plaited or plain strips of metahare all suit'- ably adhered together by solution or other adhesive and pressed and shaped to the required shape and-form. v

The .packing above described lbends easily to the piston or other 'rod' and forms an efficient packing, while the metal bar or bars v or strip vor strips is or are eiiectually held in place.-

What is claimedi'is# i l. Impiogved engine or machine packing comprisinga body made of pliable material,

and a' metal bar of suitable flexible metal,

narrower at a point between the inner edge,`

and the outer working face, whereby said metal is keyed.7 in `position when embedded within the fabric of the body, and'held therein, and having gaps extending between its working face and points toward the back" portion, and disposed in an oblique angle to the direction of'length of the metal; substantially as set forth;

2. An engine or machine packing comprising a body made of laminae of pliable ma? 

